Showing papers in "Aquaculture in 1998"

TL;DR: This review evaluates lactic acid bacteria in fish, and focuses on the several investigations that have demonstrated that Streptococcus, Leuconostoc, Lactobacillus, and Carnobacterium belong to the normal microbiota of the gastrointestinal tract in healthy fish.

TL;DR: The value of adding selected strains of Bacillus as probiotic bacteria to control the Vibrio is shown by comparing farms in Indonesia using the same water sources, which contained luminous VIBrio strains, and demonstrates that it is possible to change bacterial species composition and improve prawn production in large water bodies.

TL;DR: Nitrogen (N) biogeochemistry of aquaculture ponds is dominated by biological transformations of N added to ponds in the form of inorganic or organic fertilizers and formulated feeds, although cyanobacterial nitrogen fixation and atmospheric deposition are occasionally important.

TL;DR: After challenging shrimps with a shrimp pathogen, Vibrio harveyi, by immersion for 10 days, all probiotic treatment groups had 100% survival; whereas the control group had only 26% survival.

TL;DR: The most important diseases of cultured penaeid shrimp have had viral or bacterial etiologies, but a few important diseases have fungal and protozoan agents as their cause as mentioned in this paper.

TL;DR: Apparent digestibility of protein and availability of minerals in various feed ingredients were determined for coho salmon and rainbow trout using yttrium oxide (Y2O3) as the inert marker and passive feces collection tanks as a fractional net absorption of nutrients from diets.

TL;DR: Soy concentrate was equivalent to fish meal as a source of dietary protein for Atlantic salmon, and incubation with phytase resulted in improved protein digestibility, feed conversion, protein retention, and reduced metabolic N-excretion.

TL;DR: The relationships between semen fertilization capacity and sperm motility, seminal plasma composition and sperm metabolism in the rainbow trout, Oncorhynchus mykiss, is investigated to find out biomarkers for semen quality.

TL;DR: Growth rate, feed conversion and digestibilities of nitrogen, fat and energy were lower in the salmon fed the SBM diet than the FM and RO-SBM diets, while they were similar in Salmon fed the RO- SBM and FM diets.

TL;DR: The two PAES diets used in these studies had potent feeding deterrent properties for chinook salmon and also affected growth of rainbow trout and it is suggested that soyasaponins are responsible for the effect of these PAES.

TL;DR: G6PD, ME and ACoAC were found to be the key regulatory enzymes in the lipogenic pathway, with G6PD being the main NADPH-generating enzyme.

TL;DR: Results indicate that the oral administration of PG to kuruma shrimp enhances the phagocytic activity of the granulocytes and increases the disease resistance of shrimps.

TL;DR: Histopathology of affected shrimps showed the hepatopancreas as the target organ of infection where severe inflammatory responses in the intertubular sinuses were seen and elevated luminescent Vibrio counts in the former at 12 days to 3 weeks after initial entry of water.

TL;DR: White spot baculovirus virus (WSBV) was shown to have a wide host range and to exhibit different infectivity in the various decapods investigated in the present study.

TL;DR: The nitrogen, phosphorus and solids budget have been constructed for water exchange systems and alternative culture systems such as lined ponds, low salinity rearing and recirculation farms are described in relation to their potential for remediating problems within the shrimp culture industry.

TL;DR: The marine microalga Isochrysis galbana was cultured in nitrate, nitrite or urea media to examine changes in the gross biochemical composition, with special emphasis on the growth phase associatedChanges in the compositions of the lipid classes and fatty acids.

TL;DR: The results indicate that cultivated mussels were suitable for marketing from May to December, particularly in Loch Etive, where they remained in good condition during summer and autumn.

TL;DR: The lysine requirement of juvenile Japanese flounder and red sea bream was estimated by feeding six semi-moist diets containing graded levels of lysines hydrogen chloride in replacement of sodium glutamate.

TL;DR: Results suggest that Bacillus sp.

TL;DR: It was concluded that specific crossing schemes, possibly involving specialised sire and dam lines, may improve growth performance in Nile tilapia, but that this improvement will be quite marginal and should be accompanied by selection within the parent strains.

TL;DR: It is indicated that acute stressors decrease growth of Atlantic salmon parr, with increasing frequency of stress having a more rapid and greater effect.

TL;DR: In this article, an 86-day winter period, triplicate groups of 20 Atlantic salmon weighing ca. 5 kg were fed a high-energy diet and subsequently starved for 0, 3, 7, 14, 30, 58 and 86 days prior to slaughter.

TL;DR: In vitro experiments showed that culture filtrates from the isolates from cod and salmon inhibited the growth of Vibrio anguillarum, and both strains of lactic acid bacteria could colonize the internal mucus layer of the cod fry pyloric caeca, and a significant number of the bacteria survived the passage of the whole gastrointestinal tract.

TL;DR: It is demonstrated that Atlantic salmon smolts are more responsive to stress than parr and that developmental differences are more important than seasonal changes.

TL;DR: Results support previous opinions that PL are needed for the absorption of neutral lipids although their beneficial effect appears to be independent of their emulsifying properties.

TL;DR: It is suspected that the low recapture rates and survival of the hatchery-reared salmon smolts were, in part, caused by the handling and transport of the Smolts prior to the release.

TL;DR: The ability of BLIS-(bacteriocin-like inhibitory substance)-producing Aeromonas media, strain A199, to act as a probiotic was assessed on the host animal, Crassostrea gigas, to prevent death of the oyster larvae when challenged with Vibrio tubiashii.

TL;DR: This paper reviews nutrient requirements of penaeid shrimps based on available information in the literature and is intended to serve as a guide for those who wish to have general knowledge onPenaeid shrimp nutrition.

TL;DR: The results suggest that an optimal feeding frequency should be determined not only on the basis of growth and food conversion efficiency, but also according to influences of daily feeding pattern and the desire to achieve size uniformity.

TL;DR: In this paper, faecal dry matter content and apparent digestibility coefficients (ADC) of macronutrients were compared using three different methods of faeces collection: stripping, mechanical sieving, and dissection.